Phone numbers in Osterville, Massachusetts
Osterville has 18 phone prefixes in area codes 508, 774.
Biggest holders: Verizon (local phone), Verizon Wireless, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 44%
- Local phone company 22%
- Internet / business phone carrier 22%
- Phone company 11%
Every prefix in Osterville
Search the first six digits of a number in this list. If it's here, the number started in Osterville with the carrier shown. If it isn't, check the Massachusetts page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 508-292 | T-Mobile (including Sprint) | Mobile carrier | – |
| 508-419 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 508-420 | Verizon (local phone) | Local phone company | – |
| 508-428 | Verizon (local phone) | Local phone company | – |
| 508-477 | Verizon (local phone) | Local phone company | – |
| 508-539 | Verizon (local phone) | Local phone company | – |
| 508-648 | AT&T Mobility | Mobile carrier | – |
| 508-681 | Freedom Ring Communications | Phone company | 2006 |
| 508-777 | Norfolk County Internet | Phone company | – |
| 774-228 | Verizon Wireless | Mobile carrier | 2011 |
| 774-238 | Verizon Wireless | Mobile carrier | 2001 |
| 774-327 | Verizon Wireless | Mobile carrier | 2009 |
| 774-361 | T-Mobile (including Sprint) | Mobile carrier | 2012 |
| 774-521 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 774-602 | Verizon Wireless | Mobile carrier | 2015 |
| 774-746 | TON80 Communications | Internet / business phone carrier | 2022 |
| 774-836 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 774-871 | Onvoy | Internet / business phone carrier | 2020 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.